What feature allows Sitecore to integrate external services?

The integration of external services into Sitecore is primarily facilitated through Web APIs. Web APIs provide a standardized way for applications to communicate over the internet using HTTP requests, enabling seamless interactions between Sitecore and various external systems. By leveraging RESTful APIs, Sitecore can send and receive data to and from third-party applications, databases, or services, allowing for functionalities such as data synchronization, user authentication, and content delivery. This capability is essential for developers aiming to enhance Sitecore's functionality by connecting it with other applications, thereby creating a more robust and dynamic digital experience.

Other choices may relate to aspects of Sitecore and its functionality, but they do not specifically refer to the fundamental mechanism for integrating external services as effectively as Web APIs do. Sitecore Connect, for example, refers to components designed to connect with specific applications or services but does not encompass the broader capability of API-driven integration.